From patchwork Wed Sep 29 08:52:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= X-Patchwork-Id: 12524991 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 59006C433EF for ; Wed, 29 Sep 2021 08:56:00 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 036EF61357 for ; Wed, 29 Sep 2021 08:55:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 036EF61357 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.198877.352602 (Exim 4.92) (envelope-from ) id 1mVVNX-0000Yo-D8; Wed, 29 Sep 2021 08:55:51 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 198877.352602; Wed, 29 Sep 2021 08:55:51 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mVVNX-0000Yh-AB; Wed, 29 Sep 2021 08:55:51 +0000 Received: by outflank-mailman (input) for mailman id 198877; Wed, 29 Sep 2021 08:55:49 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1mVVNV-0000YU-Er for xen-devel@lists.xenproject.org; Wed, 29 Sep 2021 08:55:49 +0000 Received: from metis.ext.pengutronix.de (unknown [2001:67c:670:201:290:27ff:fe1d:cc33]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id a00477e7-3e9b-409a-904e-985d7576e1e5; Wed, 29 Sep 2021 08:55:47 +0000 (UTC) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1mVVL8-0001if-2j; Wed, 29 Sep 2021 10:53:22 +0200 Received: from [2a0a:edc0:0:900:1d::77] (helo=ptz.office.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1mVVL1-0004fa-GN; Wed, 29 Sep 2021 10:53:15 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1mVVL1-0000Ow-C0; Wed, 29 Sep 2021 10:53:15 +0200 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: a00477e7-3e9b-409a-904e-985d7576e1e5 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Bjorn Helgaas Cc: Christoph Hellwig , linux-pci@vger.kernel.org, kernel@pengutronix.de, Alexander Duyck , Alexander Shishkin , Andrew Donnellan , Andy Shevchenko , Arnaldo Carvalho de Melo , Arnd Bergmann , Benjamin Herrenschmidt , Bjorn Helgaas , Borislav Petkov , Boris Ostrovsky , "David S. Miller" , Fiona Trahe , Frederic Barrat , Giovanni Cabiddu , Greg Kroah-Hartman , Herbert Xu , "H. Peter Anvin" , Ido Schimmel , Ingo Molnar , Jack Xu , Jakub Kicinski , Jesse Brandeburg , Jiri Olsa , Jiri Pirko , Juergen Gross , Konrad Rzeszutek Wilk , Marco Chiappero , Mark Rutland , Mathias Nyman , Michael Buesch , Michael Ellerman , Namhyung Kim , "Oliver O'Halloran" , Paul Mackerras , Peter Zijlstra , =?utf-8?b?UmFmYcWCIE1pxYJlY2tp?= , Russell Currey , Salil Mehta , Sathya Prakash , Simon Horman , Sreekanth Reddy , Stefano Stabellini , Suganath Prabu Subramani , Taras Chornyi , Thomas Gleixner , Tomaszx Kowalik , Vadym Kochan , Wojciech Ziemba , Yisen Zhuang , Zhou Wang , linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-scsi@vger.kernel.org, linux-usb@vger.kernel.org, linux-wireless@vger.kernel.org, MPT-FusionLinux.pdl@broadcom.com, netdev@vger.kernel.org, oss-drivers@corigine.com, qat-linux@intel.com, x86@kernel.org, xen-devel@lists.xenproject.org Subject: [PATCH v5 00/11] PCI: Drop duplicated tracking of a pci_dev's bound driver Date: Wed, 29 Sep 2021 10:52:55 +0200 Message-Id: <20210929085306.2203850-1-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: xen-devel@lists.xenproject.org Hello, this is v5 of the quest to drop the "driver" member from struct pci_dev which tracks the same data (apart from a constant offset) as dev.driver. Changes since v4: - split some changes out of "PCI: replace pci_dev::driver usage that gets the driver name" and reworked them a bit as suggested by Bjorn. - Add a line break in drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c to please checkpatch --strict and Simon Horman. - Fixed a build problem in "crypto: qat - simplify adf_enable_aer()", thanks to Giovanni Cabiddu for spotting and a suggested fix. I didn't replace :: by . as suggested by Bjorn as I'm unsure if his preference is stronger than mine. This patch stack survived an allmodconfig build on arm64, m68k, powerpc, riscv, s390, sparc64 and x86_64 on top of v5.15-rc3. Best regards Uwe Uwe Kleine-König (11): PCI: Simplify pci_device_remove() PCI: Drop useless check from pci_device_probe() xen/pci: Drop some checks that are always true bcma: simplify reference to the driver's name powerpc/eeh: Don't use driver member of struct pci_dev and further cleanups ssb: Simplify determination of driver name PCI: Replace pci_dev::driver usage that gets the driver name scsi: message: fusion: Remove unused parameter of mpt_pci driver's probe() crypto: qat - simplify adf_enable_aer() PCI: Replace pci_dev::driver usage by pci_dev::dev.driver PCI: Drop duplicated tracking of a pci_dev's bound driver arch/powerpc/include/asm/ppc-pci.h | 5 -- arch/powerpc/kernel/eeh.c | 8 +++ arch/powerpc/kernel/eeh_driver.c | 10 +-- arch/x86/events/intel/uncore.c | 2 +- arch/x86/kernel/probe_roms.c | 2 +- drivers/bcma/host_pci.c | 6 +- drivers/crypto/hisilicon/qm.c | 2 +- drivers/crypto/qat/qat_4xxx/adf_drv.c | 7 +-- drivers/crypto/qat/qat_c3xxx/adf_drv.c | 7 +-- drivers/crypto/qat/qat_c62x/adf_drv.c | 7 +-- drivers/crypto/qat/qat_common/adf_aer.c | 10 +-- .../crypto/qat/qat_common/adf_common_drv.h | 3 +- drivers/crypto/qat/qat_dh895xcc/adf_drv.c | 7 +-- drivers/message/fusion/mptbase.c | 7 +-- drivers/message/fusion/mptbase.h | 2 +- drivers/message/fusion/mptctl.c | 4 +- drivers/message/fusion/mptlan.c | 2 +- drivers/misc/cxl/guest.c | 24 ++++--- drivers/misc/cxl/pci.c | 30 +++++---- .../ethernet/hisilicon/hns3/hns3_ethtool.c | 2 +- .../ethernet/marvell/prestera/prestera_pci.c | 2 +- drivers/net/ethernet/mellanox/mlxsw/pci.c | 2 +- .../ethernet/netronome/nfp/nfp_net_ethtool.c | 3 +- drivers/pci/iov.c | 25 +++++--- drivers/pci/pci-driver.c | 45 ++++++------- drivers/pci/pci.c | 4 +- drivers/pci/pcie/err.c | 36 ++++++----- drivers/pci/xen-pcifront.c | 63 +++++++++---------- drivers/ssb/pcihost_wrapper.c | 6 +- drivers/usb/host/xhci-pci.c | 2 +- include/linux/pci.h | 1 - 31 files changed, 161 insertions(+), 175 deletions(-) Range-diff against v4: 1: 8d064bbc74b0 = 1: c2b53ab26a6b PCI: Simplify pci_device_remove() 2: 966b49c308b4 = 2: 2c733e1d5186 PCI: Drop useless check from pci_device_probe() 3: ce710d6e8a1b = 3: 547ca5a7aa16 xen/pci: Drop some checks that are always true -: ------------ > 4: 40eb07353844 bcma: simplify reference to the driver's name -: ------------ > 5: bab59c1dff6d powerpc/eeh: Don't use driver member of struct pci_dev and further cleanups -: ------------ > 6: abd70de9782d ssb: Simplify determination of driver name 4: 3e4e6994a59d ! 7: 735845bd26b9 PCI: replace pci_dev::driver usage that gets the driver name @@ Metadata Author: Uwe Kleine-König ## Commit message ## - PCI: replace pci_dev::driver usage that gets the driver name + PCI: Replace pci_dev::driver usage that gets the driver name struct pci_dev::driver holds (apart from a constant offset) the same data as struct pci_dev::dev->driver. With the goal to remove struct @@ Commit message Signed-off-by: Uwe Kleine-König - ## arch/powerpc/include/asm/ppc-pci.h ## -@@ arch/powerpc/include/asm/ppc-pci.h: void eeh_sysfs_remove_device(struct pci_dev *pdev); - - static inline const char *eeh_driver_name(struct pci_dev *pdev) - { -- return (pdev && pdev->driver) ? pdev->driver->name : ""; -+ if (pdev) { -+ const char *drvstr = dev_driver_string(&pdev->dev); -+ -+ if (strcmp(drvstr, "")) -+ return drvstr; -+ } -+ -+ return ""; - } - - #endif /* CONFIG_EEH */ - - ## drivers/bcma/host_pci.c ## -@@ drivers/bcma/host_pci.c: static int bcma_host_pci_probe(struct pci_dev *dev, - if (err) - goto err_kfree_bus; - -- name = dev_name(&dev->dev); -- if (dev->driver && dev->driver->name) -- name = dev->driver->name; -+ name = dev_driver_string(&dev->dev); -+ if (!strcmp(name, "")) -+ name = dev_name(&dev->dev); -+ - err = pci_request_regions(dev, name); - if (err) - goto err_pci_disable; - ## drivers/crypto/hisilicon/qm.c ## @@ drivers/crypto/hisilicon/qm.c: static int qm_alloc_uacce(struct hisi_qm *qm) }; @@ drivers/net/ethernet/netronome/nfp/nfp_net_ethtool.c: nfp_get_drvinfo(struct nfp char nsp_version[ETHTOOL_FWVERS_LEN] = {}; - strlcpy(drvinfo->driver, pdev->driver->name, sizeof(drvinfo->driver)); -+ strlcpy(drvinfo->driver, dev_driver_string(&pdev->dev), sizeof(drvinfo->driver)); ++ strlcpy(drvinfo->driver, dev_driver_string(&pdev->dev), ++ sizeof(drvinfo->driver)); nfp_net_get_nspinfo(app, nsp_version); snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version), "%s %s %s %s", vnic_version, nsp_version, - - ## drivers/ssb/pcihost_wrapper.c ## -@@ drivers/ssb/pcihost_wrapper.c: static int ssb_pcihost_probe(struct pci_dev *dev, - err = pci_enable_device(dev); - if (err) - goto err_kfree_ssb; -- name = dev_name(&dev->dev); -- if (dev->driver && dev->driver->name) -- name = dev->driver->name; -+ -+ name = dev_driver_string(&dev->dev); -+ if (*name == '\0') -+ name = dev_name(&dev->dev); -+ - err = pci_request_regions(dev, name); - if (err) - goto err_pci_disable; 5: 574b743327b8 = 8: 1e58019165b9 scsi: message: fusion: Remove unused parameter of mpt_pci driver's probe() 6: 674c6efd3dab ! 9: dea72a470141 crypto: qat - simplify adf_enable_aer() @@ drivers/crypto/qat/qat_4xxx/adf_drv.c: static struct pci_driver adf_driver = { .probe = adf_probe, .remove = adf_remove, .sriov_configure = adf_sriov_configure, -+ .err_handler = adf_err_handler, ++ .err_handler = &adf_err_handler, }; module_pci_driver(adf_driver); @@ drivers/crypto/qat/qat_c3xxx/adf_drv.c: static struct pci_driver adf_driver = { .probe = adf_probe, .remove = adf_remove, .sriov_configure = adf_sriov_configure, -+ .err_handler = adf_err_handler, ++ .err_handler = &adf_err_handler, }; static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev) @@ drivers/crypto/qat/qat_c62x/adf_drv.c: static struct pci_driver adf_driver = { .probe = adf_probe, .remove = adf_remove, .sriov_configure = adf_sriov_configure, -+ .err_handler = adf_err_handler, ++ .err_handler = &adf_err_handler, }; static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev) @@ drivers/crypto/qat/qat_common/adf_common_drv.h: void adf_ae_fw_release(struct ad int adf_ae_stop(struct adf_accel_dev *accel_dev); -int adf_enable_aer(struct adf_accel_dev *accel_dev); ++extern const struct pci_error_handlers adf_err_handler; +void adf_enable_aer(struct adf_accel_dev *accel_dev); void adf_disable_aer(struct adf_accel_dev *accel_dev); void adf_reset_sbr(struct adf_accel_dev *accel_dev); @@ drivers/crypto/qat/qat_dh895xcc/adf_drv.c: static struct pci_driver adf_driver = .probe = adf_probe, .remove = adf_remove, .sriov_configure = adf_sriov_configure, -+ .err_handler = adf_err_handler, ++ .err_handler = &adf_err_handler, }; static void adf_cleanup_pci_dev(struct adf_accel_dev *accel_dev) 7: 0e022deb0f75 = 10: b4165dda38ea PCI: Replace pci_dev::driver usage by pci_dev::dev.driver 8: edd9d24df02a = 11: d93a138bd7ab PCI: Drop duplicated tracking of a pci_dev's bound driver base-commit: 5816b3e6577eaa676ceb00a848f0fd65fe2adc29